Siwa Oasis, Egypt

The Siwa Oasis sits in an isolated part of Egypt's Western Desert, with a settlement there recorded as far back as the 10th century BCE.

The crumbling Old Town is a remarkable and vanishing legacy of this history, still dominated by the organic shapes that constitute the remnants of the Fortress of Shali.

The building material of the fortress buildings is kershif, a mixture of salt and mud-brick that has proved to be defenceless against rainfall – much of the city was destroyed by a massive downpour in 1926.

The Church of the Redeemer, Turkey

The Church of the Redeemer in Ani, Turkey, or least what remains of it after hundreds of years of decay and weathering.

The church's construction was completed in 1035, and it was restored at several points throughout its history before it was finally left to the elements in the mid-18th century (along with the rest of the city).

The collapse of the entire eastern half of the church most likely dates to 1957.

During that year local people remember a huge storm one night, accompanied by the sound of crashing masonry in the distance as the church's neglected structure finally gave way.

Al-Ula, Saudi Arabia

Al-Ula in Saudi Arabia is an astonishing spectacle even after the passage of more than 2,500 years.

Established in the sixth century BCE, and extensively reconstructed in the 13th century CE, the walled city grew to encompass some 800 mud-brick and stone houses, huddled together in a bewildering maze of alleys, walls and small courtyards.

Kamal Shtewi, a resident of al-Khalidiya neighbourhood, poses for a photograph in front of destroyed buildings in al-Khalidiya area, in the government-controlled part of Homs, Syria, September 18, 2018

We pay for your stories! Do you have a story for The Sun Online news team? Email us at tips@the-sun.co.uk or call 0207 782 4368 . You can WhatsApp us on 07810 791 502. We pay for videos too. Click here to upload yours.